apiVersion: batch/v1
kind: CronJob
metadata:
  name: postgres-backup
  namespace: veza-production
  labels:
    app: postgres-backup
    component: backup
spec:
  # Run daily at 3 AM
  schedule: "0 3 * * *"
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  concurrencyPolicy: Forbid
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            app: postgres-backup
        spec:
          restartPolicy: OnFailure
          containers:
          - name: postgres-backup
            image: postgres:15-alpine
            command:
            - /bin/sh
            - -c
            - |
              set -e
              BACKUP_DIR="/backups/postgres"
              BACKUP_FILE="${BACKUP_DIR}/veza_db_$(date +%Y%m%d_%H%M%S).dump"
              RETENTION_DAYS=${BACKUP_RETENTION_DAYS:-30}
              
              echo "Starting backup at $(date)"
              
              # Create backup directory
              mkdir -p "${BACKUP_DIR}"
              
              # Create backup using pg_dump with custom format (compressed)
              PGPASSWORD="${POSTGRES_PASSWORD}" pg_dump \
                -h "${POSTGRES_HOST}" \
                -p "${POSTGRES_PORT:-5432}" \
                -U "${POSTGRES_USER}" \
                -d "${POSTGRES_DB}" \
                -F c \
                -f "${BACKUP_FILE}"
              
              # Verify backup was created
              if [ ! -f "${BACKUP_FILE}" ]; then
                echo "ERROR: Backup file was not created!"
                exit 1
              fi
              
              BACKUP_SIZE=$(du -h "${BACKUP_FILE}" | cut -f1)
              echo "Backup created successfully: ${BACKUP_FILE} (${BACKUP_SIZE})"
              
              # Cleanup old backups
              echo "Cleaning up backups older than ${RETENTION_DAYS} days..."
              find "${BACKUP_DIR}" -name "veza_db_*.dump" -type f -mtime +${RETENTION_DAYS} -delete
              
              # List remaining backups
              echo "Remaining backups:"
              ls -lh "${BACKUP_DIR}" || true
              
              # Optional: Upload to S3 or other storage
              if [ -n "${S3_BUCKET}" ] && [ -n "${AWS_ACCESS_KEY_ID}" ] && [ -n "${AWS_SECRET_ACCESS_KEY}" ]; then
                echo "Uploading backup to S3..."
                # Install aws-cli if not available (alpine)
                apk add --no-cache aws-cli || true
                aws s3 cp "${BACKUP_FILE}" "s3://${S3_BUCKET}/postgres-backups/$(basename ${BACKUP_FILE})" || echo "S3 upload failed, continuing..."
              fi
              
              echo "Backup completed at $(date)"
            env:
            - name: POSTGRES_HOST
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: postgres-host
            - name: POSTGRES_PORT
              value: "5432"
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: postgres-user
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: postgres-password
            - name: POSTGRES_DB
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: postgres-db
            - name: BACKUP_RETENTION_DAYS
              value: "30"
            - name: S3_BUCKET
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: s3-backup-bucket
                  optional: true
            - name: AWS_ACCESS_KEY_ID
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: aws-access-key-id
                  optional: true
            - name: AWS_SECRET_ACCESS_KEY
              valueFrom:
                secretKeyRef:
                  name: veza-secrets
                  key: aws-secret-access-key
                  optional: true
            volumeMounts:
            - name: backup-storage
              mountPath: /backups
            resources:
              requests:
                cpu: "200m"
                memory: "256Mi"
              limits:
                cpu: "1000m"
                memory: "1Gi"
          volumes:
          - name: backup-storage
            persistentVolumeClaim:
              claimName: postgres-backup-storage

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-backup-storage
  namespace: veza-production
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 100Gi